What is the Sortino Ratio?

Sean P. Gilligan, CFA, CPA, CIPM
Managing Partner
June 30, 2020
15 min
What is the Sortino Ratio?

The Sortino Ratio is similar to the Sharpe Ratio as it is used to compare and rank managers with similar strategies. However, unlike Sharpe, the Sortino Ratio measures the incremental average strategy return over a minimum acceptable return per unit of downside risk rather than total risk.

Because of this difference, the Sortino Ratio may be more appropriate than the Sharpe Ratio when assessing strategies with non-normal return streams. For example, the Sharpe Ratio is appropriate when assessing a traditional equity manager, while the Sortino Ratio would be more appropriate for a hedge fund strategy that uses derivatives to seek asymmetrical, positive spikes in performance. The Sharpe Ratio, using total risk (measured by standard deviation), would penalize this hedge fund manager for these positive spikes in performance, while the Sortino Ratio, using downside risk (measured by downside deviation), would not.

Sortino Ratio Formula

Sortino Ratio Formula

Annualized Sortino Ratio

When calculating the Sortino Ratio using monthly data, the Sortino Ratio is annualized by multiplying the entire result by the square root of 12.

What is a Good Sortino Ratio?

The Sortino Ratio is a ranking device so a portfolio’s Sortino Ratio should be compared to that of other portfolios rather than evaluated independently. In general, investors prefer higher Sortino Ratios when comparing similarly managed portfolios.

Sortino Ratio vs. Sharpe Ratio Calculation Example

Suppose two similar strategies, Strategy A and Strategy B, had the following characteristics over one year. For this period, the minimum acceptable return is the risk-free rate, which is 0.10% (monthly average return).

Sortino Ratio Example

Please note that the Sortino Ratio calculated in this example is based on monthly data and, therefore, must be annualized to get the final result. The following is a breakdown of the calculation:

For more details on how to calculate the Sharpe Ratio, check out What is the Sharpe Ratio.

Although the strategies have the same average monthly return over the one-year period, the Sortino Ratios differ significantly due to their differences in downside risk (i.e., downside deviation). Strategy A is preferred over Strategy B to an investor deciding between the two because it has a higher Sortino Ratio.

When using the Sharpe Ratio to evaluate the two strategies, the result is the opposite than it is when using the Sortino Ratio. How can this be?

If the Standard Deviation (i.e., total risk) is higher for Strategy A than Strategy B, but Downside Deviation (i.e., downside risk) is lower for Strategy A than Strategy B, we can infer that at least some of the volatility in Strategy A’s return stream is caused by positive spikes in performance. Standard Deviation treats all volatility (both positive and negative) equally, while Downside Deviation does not penalize the manager for positive volatility.

Sortino Ratio Interpretation

The Sortino Ratio is one of the best measures for return streams with non-normal distributions (such as hedge funds). This is because Sortino only penalizes for negative volatility and not positive spikes in performance.

If, for example, an investor is looking for a high reward strategy, then upside volatility can be a good thing.

Why is the Sortino Ratio Important?

The Sortino Ratio allows investors to evaluate portfolio performance for non-normal return distributions after adjusting for risk. Comparing returns without accounting for risk does not provide a complete picture of the strategy. Using total risk, as the Sharpe Ratio does, can make a strategy look riskier than it truly is if the volatility is skewed positively.

Sortino Ratio Calculation: Using Arithmetic Mean or Geometric Mean

Because the Sortino Ratio compares return to risk (through downside deviation), we use Arithmetic Mean to calculate the strategy return. Geometric Mean penalizes the return stream for taking on more risk. However, since the Sortino Ratio already accounts for risk in the denominator, using Geometric Mean in the numerator would account for risk twice. For more information on the use of arithmetic vs. geometric mean for performance appraisal measures, please check out Arithmetic vs Geometric Mean: Which to use in Performance Appraisal.

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In most investment firms, performance calculation is treated like a math problem: get the numbers right, double-check the formulas, and move on. And to be clear—that part matters. A lot.

But here’s the truth many firms eventually discover: perfectly calculated performance can still be poorly communicated.

And when that happens, clients don’t gain confidence. Consultants don’t “get” the strategy. Prospects walk away unconvinced. Not because the returns were wrong—but because the story was missing.

Calculation Is Technical. Communication Is Human.

Performance calculation is about precision. Performance communication is about understanding.

The two overlap, but they are not the same skill set.

You can calculate a composite’s time-weighted return flawlessly, in line with the Global Investment Performance Standards (GIPS®), using best-in-class methodologies. Yet if the only thing your audience walks away with is “we beat the benchmark,” you’ve left most of the value on the table.

This gap shows up all the time:

  • A client sees strong long-term returns but fixates on one bad quarter.
  • A consultant compares two managers with similar returns and can’t tell what truly differentiates them.
  • A prospect asks, “But how did you generate these results?”—and the answer is a wall of statistics.

The math is necessary. It’s just not sufficient.

Returns Answer What. Clients Care About Why.

Returns tell us what happened. Clients want to know why it happened—and whether it’s likely to happen again.

That’s where communication comes in. Good performance communication connects returns to:

  • The investment philosophy
  • The decision-making process
  • The risks taken (and avoided)
  • The type of prospect the strategy is designed for

This is exactly why performance evaluation doesn’t stop at returns in the CFA Institute’s CIPM curriculum. Measurement, attribution, and appraisal are distinct steps fora reason—each adds context that raw performance alone cannot provide. Without that context, returns become just numbers on a page.

The Role of Standards: Necessary, Not Narrative

The GIPS Standards exist to ensure performance is fairly represented and fully disclosed. They do an excellent job of standardizing how performance is calculated and what must be presented. But GIPS compliance doesn’t automatically make performance meaningful to the reader.

A GIPS Report answers questions like:

  • What was the annual return of the composite?
  • What was the annual return of the composite’s benchmark?
  • How volatile was the strategy compared to the benchmark?

It does not answer:

  • Why did this strategy struggle in down markets?
  • What risks did the manager consciously take?
  • How should an allocator think about using this strategy in a broader portfolio?

That’s not a flaw in the standards, it’s a reminder that communication sits on top of compliance, not inside it.

Risk Statistics: Where Stories Start (or Die)

One of the most common communication missteps is overloading clients with risk statistics without explaining what they actually mean or how they can be used to assess the active decisions made in your investment process.

Sharpe ratios, capture ratios, alpha, beta—they’re powerful information. But without interpretation, they’re just numbers.

For example:

  • A downside capture ratio below 100% isn’t impressive on its own.
  • It becomes compelling when you explain how intentionally implemented downside protection was achieved and what trade-offs were accepted in strong up-markets.

This is where performance communication turns data into insight—connecting risk statistics back to portfolio construction and decision-making. Too often, managers select statistics because they look good or because they’ve seen them used elsewhere, rather than because they align with their investment process and demonstrate how their active decisions add value. The most effective communicators use risk statistics intentionally, in the context of what they are trying to deliver to the investor.

We often see firms change the statistics show Your most powerful story may come from when your statistics show you’ve missed the mark. Explaining why and how you are correcting course demonstrates discipline, self-awareness and control.

Know Your Audience Before You Tell the Story

Before you dive into risk statistics, every manager should be asking themselves about their audience. This is where performance communication becomes strategic. Who are you actually talking to? The right performance story depends entirely on your target audience.

Institutional Prospects

Institutional clients and consultants often expect:

  • Detailed risk statistics
  • Benchmark-relative analysis
  • Attribution and metrics that demonstrate consistency
  • Clear articulation of where the strategy fits in a portfolio

They want to understand process, discipline, and risk control. Performance data must be presented with precision and context –grounded in methodology, repeatability and portfolio role. Often, GIPS compliance is a must. Speaking their language builds credibility and demonstrates that you respect the rigor of their decision-making process. It shows that you understand how they evaluate managers and that you are prepared to stand behind your process.

Retail or High-Net-Worth Individuals

Many individual investors don’t care about alpha or capture ratios in isolation. What they really want to know is:

  • Will this help me retire comfortably?
  • Can I afford that second home?
  • How confident should I feel during market downturns?

For this audience, the same performance data must be framed differently—around goals, outcomes, and peace of mind. Sharing how you track and report on these goals in your communication goes a long way in building trust. It signals that you are committed to their goals and will hold yourself accountable to them.  It reassures them that you are not just managing money, you’re protecting the lifestyle they are building.

Keep in mind that cultural differences also shape expectations. For example, US-based investors are primarily results oriented, while investors in Japan often expect deeper transparency into the process and inputs, wanting to understand and validate how those results were achieved.

Same Numbers. Different Story.

The mistake many firms make is assuming one performance narrative works for everyone. It doesn’t. Effective communication adapts:

  • The statistics you emphasize
  • The language you use
  • The level of detail you provide
  • The context you wrap around the results

The goal isn’t to simplify the truth, it’s to translate it to ensure it resonates with the person on the other side of the table.

The Best Performance Reports Tell a Coherent Story

Strong performance communication does three things well:

  1. It sets expectations
    Before showing numbers, it reminds the reader what the strategy is     designed to do—and just as importantly, what it’s not designed to     do.
  2. It     explains outcomes
        Attribution, risk metrics, and market context are used selectively to     explain results, not overwhelm the reader.
  3. It reinforces discipline
    Good communication shows consistency between philosophy, process, and performance—especially during periods of underperformance.

This doesn’t mean dumbing anything down. It means respecting the audience enough to guide them through the data.

Calculation Builds Credibility. Communication Builds Confidence.

Performance calculation earns you a seat at the table.
Performance communication earns trust.

Firms that master both don’t just report results—they help clients understand them, evaluate them, and believe in them.

In an industry where numbers are everywhere, clarity is often the true differentiator.

Key Takeaways from the 29th Annual GIPS® Standards Conference in Phoenix

The 29th Annual Global Investment Performance Standards (GIPS®) Conference was held November 11–12, 2025, at the Sheraton Grand at Wild Horse Pass in Phoenix, Arizona—a beautiful desert resort and an ideal setting for two days of discussions on performance reporting, regulatory expectations, and practical implementation challenges. With no updates released to the GIPS standards this year, much of the content focused on application, interpretation, and the broader reporting and regulatory environment that surrounds the standards.

One of the few topics directly tied to GIPS compliance with a near-term impact relates to OCIO portfolios. Beginning with performance presentations that include periods through December 31, 2025, GIPS compliant firms with OCIO composites must present performance following a newly prescribed, standardized format. We published a high-level overview of these requirements previously.

The conference also covered related topics such as the SEC Marketing Rule, private fund reporting expectations, SEC exam trends, ethical challenges, and methodology consistency. Below are the themes and observations most relevant for firms today.

Are Changes Coming to the GIPS Standards in 2030?

Speakers emphasized that while no new GIPS standards updates were introduced this year, expectations for consistent, well-documented implementation continue to rise. Many attendee questions highlighted that challenges often stem more from inconsistent application or interpretation than from unclear requirements.

Several audience members also asked whether a “GIPS 2030” rewrite might be coming, similar to the major updates in 2010 and 2020. The CFA Institute and GIPS Technical Committee noted that:

    ·   No new version of the standards is currently in development,

     ·   A long-term review cycle is expected in the coming years, and

     ·   A future update is possible later this decade as the committee evaluates whether changes are warranted.

For now, the standards remain stable—giving firms a window to refine methodologies, tighten policies, and align practices across teams.

Performance Methodology Under the SEC Marketing Rule

The Marketing Rule featured prominently again this year, and presenters emphasized a familiar theme: firms must apply performance methodologies consistently when private fund results appear in advertising materials.

Importantly, these expectations do not come from prescriptive formulas within the rule. They stem from:

1.     The “fair and balanced” requirement,

2.     The Adopting Release, and

3.     SEC exam findings that view inconsistent methodology as potentially misleading.

Common issues raised included: presenting investment-level gross IRR alongside fund-level net IRR without explanation, treating subscription line financing differently in gross vs. net IRR, and inconsistently switching methodology across decks, funds, or periods.

To help firms void these pitfalls, speakers highlighted several expectations:

     ·   Clearly identify whether IRR is calculated at the investment level or fund level.

     ·   Use the same level of calculation for both gross and net IRR unless a clear, disclosed rationale exists.

     ·   Apply subscription line impacts consistently across both gross and net.

     ·   Label fund-level gross IRR clearly, if used(including gross returns is optional).

     ·   Ensure net IRR reflects all fees, expenses, and carried interest.

     ·   Disclose any intentional methodological differences clearly and prominently.

     ·   Document methodology choices in policies and apply them consistently across funds.

This remains one of the most frequently cited issues in SEC exam findings for private fund advisers. In short: the SEC does not mandate a specific methodology, but it does expect consistent, well-supported approaches that avoid misleading impressions.

Evolving Expectations in Private Fund Client Reporting

Although no new regulatory requirements were announced, presenters made it clear that limited partners expect more transparency than ever before. The session included an overview of the updated ILPA reporting template along with additional information related to its implementation. Themes included:

     ·   Clearer disclosure of fees and expenses,

     ·   Standardized IRR and MOIC reporting,

     ·   More detail around subscription line usage,

     ·   Attribution and dispersion that are easy to interpret, and

     ·   Alignment with ILPA reporting practices.

These are not formal requirements, but it’s clear the industry is moving toward more standardized and transparent reporting.

Practical Insights from SEC Exams—Including How Firms Should Approach Deficiency Letters

A recurring theme across the SEC exam sessions was the need for stronger alignment between what firms say in their policies and what they do in practice. Trends included:

     ·   More detailed reviews of fee and expense calculations, especially for private funds,

     ·   Larger sample requests for Marketing Rule materials,

     ·   Increased emphasis on substantiation of all claims, and

     ·   Close comparison of written procedures to actual workflows.

A particularly helpful part of the discussion focused on how firms should approach responding to SEC deficiency letters—something many advisers encounter at some point.

Christopher Mulligan, Partner at Weil, Gotshal & Manges LLP, offered a framework that resonated with many attendees. He explained that while the deficiency letter is addressed to the firm by the exam staff, the exam staff is not the primary audience when drafting the response.

The correct priority order is:

1. The SEC Enforcement Division

Enforcement should be able to read your response and quickly understand that: you fully grasp the issue, you have corrected or are correcting it, and nothing in the finding merits escalation.

Your first objective is to eliminate any concern that the issue rises to an enforcement matter.

2. Prospective Clients

Many allocators now request historical deficiency letters and responses during due diligence. The way the response is written—its tone, clarity, and thoroughness—can meaningfully influence how a firm is perceived.

A well-written response shows strong controls and a culture that takes compliance seriously.

3. The SEC Exam Staff

Although examiners issued the letter, they are the third audience. Their primary interest is acknowledgment and a clear explanation of the remediation steps.

Mulligan emphasized that firms often default to writing the response as if exam staff were the only audience. Reframing the response to keep the first two audiences in mind—enforcement and prospective clients—helps ensure the tone, clarity, and level of detail are appropriate and reduces both regulatory and reputational risk.

Final Thoughts

With no changes to the GIPS standards introduced this year, the 2025 conference in Phoenix served as a reminder that the real challenges involve consistency, documentation, and communication. OCIO providers in particular should be preparing for the upcoming effective date, and private fund managers continue to face rising expectations around transparent, well-supported performance reporting.

Across all sessions, a common theme emerged: clear methodology and strong internal processes are becoming just as important as the performance results themselves.

This is exactly where Longs Peak focuses its work. Our team specializes in helping firms document and implement practical, well-controlled investment performance frameworks—from IRR methodologies and composite construction to Marketing Rule compliance, fee and expense controls, and preparing for GIPS standards verification. We take the technical complexity and turn it into clear, operational processes that withstand both client due diligence and regulatory scrutiny.

If you’d like to discuss how we can help strengthen your performance reporting or compliance program, we’d be happy to talk. Contact us.

From Compliance to Growth: How the GIPS® Standards Help Investment Firms Unlock New Opportunities

For many investment managers, the first barrier to growth isn’t performance—it’s proof.
When platforms, consultants, and institutional investors evaluate new strategies, they’re not just asking how well you perform; they’re asking how you measure and present those results.

That’s where the GIPS® standards come in.

More and more investment platforms and allocators now require firms to comply with the GIPS standards before they’ll even review a strategy. For firms seeking to expand their reach—whether through model delivery, SMAs, or institutional channels—GIPS compliance has become a passport to opportunity.

The Opportunity Behind Compliance

Becoming compliant with the GIPS standards is about more than checking a box. It’s about building credibility and transparency in a way that resonates with today’s due diligence standards.

When a firm claims compliance with the GIPS standards, it demonstrates that its performance is calculated and presented according to globally recognized ethical principles—ensuring full disclosure and fair representation. This helps level the playing field for managers of all sizes, giving them a chance to compete where it matters most: on results and consistency.

In short, GIPS compliance doesn’t just make your reporting more accurate—it makes your firm more credible and discoverable.

Turning Complexity Into Clarity

While the benefits are clear, the process can feel overwhelming. Between defining the firm, creating composites, documenting policies and procedures, and maintaining data accuracy—many teams struggle to find the time or expertise to get it right.

That’s where Longs Peak comes in.

We specialize in simplifying the process. Our team helps firms navigate every step—from initial readiness and composite construction to quarterly maintenance and ongoing training—so that compliance becomes a seamless part of operations rather than a burden on them.

As one of our clients put it, “Longs Peak helps us navigate GIPS compliance with ease. They spare us from the time and effort needed to interpret what the requirements mean and let us focus on implementation.”

Real Firms, Real Impact

We’ve seen firsthand how GIPS compliance can transform firms’ growth trajectories.

Take Genter Capital Management, for example. As David Klatt, CFA and his team prepared to expand into model delivery platforms, managing composites in accordance with the GIPS standards became increasingly complex. With Longs Peak’s customized composite maintenance system in place, Genter gained the confidence and operational efficiency they needed to access new platforms and relationships—many of which require firms to be GIPS compliant as a baseline.

Or consider Integris Wealth Management. After years of wanting to formalize their composite reporting, they finally made it happen with our support. As Jenna Reynolds from Integris shared:

“When I joined Integris over seven years ago, we knew we wanted to build out our composite reporting, but the complexity of the process felt overwhelming. Since partnering with Longs Peak in 2022, they’ve been instrumental in driving the project to completion. Our ongoing collaboration continues to be both productive and enjoyable.”

These are just two examples of what happens when compliance meets clarity—firms gain time back, confidence grows, and new business doors open.

Why It Matters—Compliance as a Strategic Advantage

At Longs Peak, we believe compliance with the GIPS standards isn’t a cost—it’s an investment.

By aligning your firm’s performance reporting with the GIPS standards, you gain:

  • Access to platforms and institutions that require GIPS compliant firms.
  • Credibility and trust in an increasingly competitive landscape.
  • Operational efficiency through consistent data and documented processes.
  • Scalability to support multiple strategies and distribution channels.

Simply put: compliance fuels confidence—and confidence drives growth.

Simplifying the Complex

At Longs Peak, we’ve helped over 250 firms and asset owners transform how they calculate, present, and communicate their investment performance. Our goal is simple: make compliance with the GIPS standards practical, transparent, and aligned with your firm’s growth goals.

Because when compliance works efficiently, it doesn’t slow your business down—it helps it reach further.

Ready to turn compliance into a growth advantage?

Let’s talk about how we can help your firm simplify the complex.

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